Prepared roofing.



E. J. SGHRODBR. PREPARED ROOFING. APPLICATION FILED SEPT. 9, 1910.

1,9791% Patented 0011311911.

time STATES EDWARD J. SCI-IRODER, 'OF CHICAGO, ILLINOIS.

PREPARED ROOFING.

Specification of Letters Patent.

Application filed September 9, 1910. Serial No. 581,261.

To (171 whom it may concern:

Be it known that I, EDWARD J. SCIIRODER,

a citizen of the United States, residing at Chicago, in the county ofCook and State of Ilhnols, have invented certain new and usefulImprovements in Prepared Roofing,

of which the following is a specification.

One of the objects of this invention is to provide a prepared orcomposition roofing having an outer protective layer adapted effectivelyto resist the action of moisture, heat and corrosive gases and vapors.

A further object of the invention is to impart to prepared roofing apermanent, attractive color.

These objects I attain by placing upon a roofing body of any suitable orpreferred character a layer of crushed slate, the slate being rolledupon the roofing body so as firmly to attach the slate particles to saidbody, and to give to the slate coating a substantially smooth exteriorsurface. Slate being of laminated structure, the particles of crushedslate partake of the general character of flakes, matching together soas completely to' cover the asphalt or other water-A proofing materiallocated below, thereby effectively protecting said asphalt from rain andsnow and from the corrosive fumes and gases to which roofing issubjected when used upon fertilizer and chemical manufactories, etc.Moreover, by the use of the slate covering a permanent and uniform coloris obtained without added expense.

In the accompanying drawings, Figure 1 is a fragmental top'plan view ofprepared roofing embodying the features of my invention. Fig. 2 is across-sectional View,

more or less diagrammatic,

of said roofing. Roofing embodying my invention may comprise a body ofany suitable or preferred character; that herein shownby way of exampleconsists of a sheet 1 of felt saturated with a suitable waterproofingmaterial, as, for instance, asphalt; a layer 2 of asphalt placed uponthe felt; a sheet 3 of burlap saturated with waterproofing material andsuperposed upon the layer 2; and a coating 4 of asphalt or the likeplaced upon the burlap. At a suitable point in the .manufacture of theroofing I place upon the roofing body a layer of crushed slate andpress.

the slate particles into close contact with Patented Oct. 31, 1911.

the asphalt coating 4 by means of suitable rolls. The slate covering isrepresented diagrammatically at 5 inthe drawings. Slate being ofstratified or laminated texture, as distinguished from the crystallineform, the particles of crushed slate consist of flakes or laminae, whichwhen rolled lie substantially parallel with the plane of the roofingbody, and thus impart to the finished product an approximately smoothouter surface. IVhen the slate is rolled, some of the asphalt is forced.into the interstices between the slate flakes, and to the asphalt thusexuded other flakes become attached, the asphalt coating 4 thus becomingcompletely covered with slate.

As indicated in the drawings, some of the flakes of slate matchtogether, these being held in place by the asphalt below; and

some of the flakes overlap the crevices existing between the other slatefragments, such' overlapping pieces being retained in place by theasphalt forced into said crevices during the rolling process. Because ofits continuous character, the slate coating gives a uniform color to theroofing.

In roofing as heretofore constructed, the gravel, sand or crystallinematerial does not effectively protect the asphalt or other adhesivelayer below it, and consequently the asphalt exposed to the action ofthe weather and corrosive acids deteriorates and loses its power ofholding in place the gravel or other material composing the outerlayerof the roofing. \Vhen the gravel-thus released is washed or blownaway, other portions' of the asphalt become exposed, and

the process of deterioration goes on at an increasing rate. In roofingembodying my invention, however, the slate coverin efficiently protectsthe asphalt from molsture and injurious fumes, and therefore is itselfefi'ectively retained in place by the asphalhi The slate imparts to thefinished article the natural color of the slate, which color ispermanent and uniform and is, of course, obtained without additionalexpense.

It will be understood that my invention is applicable to compositionroofing in roll, sheet or shingle form. I claim as my invention: 7

Prepared roofing consisting of a body having a coating of adhesivewaterproofing into contact with the adhesive material, said flakes lyingsubstantially parallel with the material, andan outer protective coatingof ticles providing an approximately smooth crushed slate, the flakes ofslate being rolled outer surface for the roofing.

EDWARDLJ. SCHRODER.

\Vitnesses:

FRANK C. STRASSER, EBEN R. CHRISTENSEN.

adhesive coating, said flakes being matched together and overlapped soas to cove'rthe adhesive material; the layer of slate par-

